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pro vyhledávání: '"Antoni Sawicki"'
Autor:
Antoni Sawicki
Publikováno v:
Archives of Electrical Engineering, Vol vol. 70, Iss No 4, Pp 819-834 (2021)
This paper describes modifications of the Mayr and Cassie models of the electric arc. They include the phenomena of increased heat dissipation and non-zero residual conductance when the current passes through zero. The modified models are combined in
Externí odkaz:
https://doaj.org/article/eb2878531fec45599900c0b5c5e61888
Autor:
Antoni Sawicki
Publikováno v:
Archives of Electrical Engineering, Vol vol. 70, Iss No 1, Pp 89-102 (2021)
Mathematical models of electric an arc with disturbed geometric sizes were created based on initial assumptions adopted from theMayr and Cassie models. Two cases of approximation of arc characteristics were considered separately. The Mayr–Voronin m
Externí odkaz:
https://doaj.org/article/881e7c0b89494119a7f0425d17c418f2
Autor:
Antoni Sawicki
Publikováno v:
Archives of Electrical Engineering, Vol vol. 68, Iss No 1, Pp 147-159 (2019)
This paper demonstrates that if a linear dependence of arc dissipated power on power supplied is introduced at an initial stage of analysis, then, with some simplifying assumptions, the classical Mayr model is obtained. Similarly, if this dependence
Externí odkaz:
https://doaj.org/article/c76588635efc44f5af611e95def4f822
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :43-49
The article discusses selected structural and operational properties of DC and AC arc plasma torches. References cited in the article contain generalised analytical expressions identifying experimental current-voltage characteristics of typical arc p
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :51-57
The article discusses the possibility of extending the usability of wellknown integral method formulas used to determine the parameters of the Mayr and Cassie mathematical models of fixed-length arc. Simulation tests discussed in the article involved
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :47-57
The article presents universal mathematical static current-voltage characteristics- based models of electric arc and indicates primary issues concerned with arc diagnostics related to the determination of the above-named models. Particular attention
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :41-50
The article discusses selected physical properties of industrial ultrasonic equipment utilising the magnetostrictive or electrostrictive effect. Particular attention was paid to equipment enabling the ultrasonic welding of various metals and thermopl
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :49-60
The second part of the overview article discusses general features of the design and operation of selected industrial arc plasma torches. Because of their structural and operating differences, plasma torch power supply systems with internal and partl
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :51-59
The article presents the justified use of functions containing the exponential component for the approximation of the static current-voltage characteristics of electric arc. The Author proposed a new function approximating the above-named characteris
Autor:
Antoni Sawicki
Publikováno v:
Biuletyn Instytutu Spawalnictwa. :43-50
The article presents selected tapering functions useful when creating hybrid models and functions approximating static current-voltage characteristics of arc. The research work involved the formation and verification of families of static current-vol